package com.authine.cloudpivot.web.api.utils;


import lombok.extern.slf4j.Slf4j;
import org.apache.http.*;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URI;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

/**
 * Client工具类
 * @author pan94
 * @auto
 */

@Slf4j
public class HttpClientUtils {
    static  final String  UTF8 = "UTF-8";


    public static String doGet(String url, Map<String,String> headerMap) {

        try {
            HttpClient client =  HttpClientBuilder.create().build();
            HttpGet request = new HttpGet(url);
            //设置超时时间
            RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(5000).setConnectionRequestTimeout(1000).setSocketTimeout(5000).build();
            request.setConfig(requestConfig);


            if (headerMap != null) {

                for (Map.Entry<String,String> entry : headerMap.entrySet()) {
                    request.setHeader(entry.getKey(),entry.getValue());
                }
            }

            HttpResponse response = client.execute(request);

            /**请求发送成功，并得到响应**/

            if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {

                /**读取服务器返回过来的json字符串数据**/

                String strResult = EntityUtils.toString(response.getEntity());

                return strResult;
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * get请求
     * @return
     */
    public static String doGet(String url) {
        return doGet(url, null);
    }



    /**

     * post请求(用于key-value格式的参数)

     * @param url

     * @param params

     * @return

     */

    public static String doPost( String url, Map params ){
        BufferedReader in = null;
        try {
            /* 定义HttpClient */
            HttpClient client =  HttpClientBuilder.create().build();

            /* 实例化HTTP方法 */
            HttpPost request = new HttpPost();
            request.setURI( new URI( url ) );
            //设置超时时间
            RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(5000).setConnectionRequestTimeout(1000).setSocketTimeout(5000).build();
            request.setConfig(requestConfig);

            /* 设置参数 */
            List <NameValuePair> nvps = new ArrayList <NameValuePair> ();

            for ( Iterator iter = params.keySet().iterator(); iter.hasNext(); ) {
                String name = (String) iter.next();

                String value = String.valueOf( params.get( name ) );

                nvps.add( new BasicNameValuePair( name, value ) );
            }

            request.setEntity( new UrlEncodedFormEntity( nvps, HttpClientUtils.UTF8) );
            HttpResponse response = client.execute( request );

            int	code	= response.getStatusLine().getStatusCode();
            Integer lb	= 200;
            if ( code == lb ) {
                in = new BufferedReader( new InputStreamReader( response.getEntity()

                        .getContent(), HttpClientUtils.UTF8) );

                StringBuffer sb = new StringBuffer( "" );

                String line = "";

                String nl = System.getProperty( "line.separator" );

                while ( (line = in.readLine() ) != null ) {
                    sb.append( line + nl );
                }
                in.close();
                return(sb.toString() );
            } else {
                System.out.println( "状态码：" + code );
                return null;
            }
        } catch ( Exception e ) {
            e.printStackTrace();
            return null;
        }
    }



    /**
     * post请求（用于请求json格式的参数）
     * @param url
     * @param params
     * @return
     */
    public static String doPost( String url, String params,Map<String,String> headerMap) throws Exception{
        CloseableHttpClient httpclient = HttpClients.createDefault();

        HttpPost httpPost = new HttpPost( url );

        if (headerMap != null) {
            for (Map.Entry<String,String> entry : headerMap.entrySet()) {
                httpPost.setHeader(entry.getKey(),entry.getValue());
            }
        }


        StringEntity entity = new StringEntity( params, HttpClientUtils.UTF8 );
        httpPost.setEntity( entity );
        CloseableHttpResponse response = null;

        //设置超时时间
        RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(5000).setConnectionRequestTimeout(1000).setSocketTimeout(5000).build();
        httpPost.setConfig(requestConfig);

        try {
            response = httpclient.execute( httpPost );
            StatusLine status = response.getStatusLine();
            int state = status.getStatusCode();
            if ( state == HttpStatus.SC_OK ){
                HttpEntity responseEntity = response.getEntity();
                String jsonString = EntityUtils.toString( responseEntity );
                return jsonString;
            } else {
                log.error( "请求返回:" + state + "(" + url + ")" );
            }
        } finally {
            if ( response != null ){
                try {
                    response.close();
                } catch ( IOException e ) {
                    e.printStackTrace();
                }
            }
            try {
                httpclient.close();
            } catch ( IOException e ) {
                e.printStackTrace();
            }
        }
        return(null);
    }




}